1 files changed, 18 insertions, 0 deletions

diff --git a/case_starts.c b/case_starts.c
new file mode 100644
index 0000000..2278a0a
--- /dev/null
+++ b/case_starts.c
@@ -0,0 +1,18 @@
+#include "case.h"
+
+int case_starts(s,t)
+register char *s;
+register char *t;
+{
+  register unsigned char x;
+  register unsigned char y;
+
+  for (;;) {
+    x = *s++ - 'A';
+    if (x <= 'Z' - 'A') x += 'a'; else x += 'A';
+    y = *t++ - 'A';
+    if (y <= 'Z' - 'A') y += 'a'; else y += 'A';
+    if (!y) return 1;
+    if (x != y) return 0;
+  }
+}